Patented in 2005, Dewitt’s Tourbillon Différentiel® has taken its place in the history of creative watchmaking and represents a significant breakthrough with respect to the basic working principles of a mechanical movement. Traditionally housed in a case that is a combination of titanium, rose gold and rubber, the Tourbillon Différentiel®, starting this year, will be clothed in 950 platinum, 18-carat rose gold and a blend of 18-carat rose and white gold.